Cohasset, MA Radon Levels
Check local Cohasset radon levels and find certified testing and mitigation professionals to keep your home safe
Cohasset, MA Radon Facts
This coastal community in Norfolk County shows significantly elevated radon levels, with testing data revealing an average of 11.5 pCi/L - nearly triple the EPA's 4.0 pCi/L action threshold. Located within the Boston Metro area (02025), Cohasset's granite bedrock and glacial till deposits create conditions highly favorable for radon gas production and accumulation. With readings ranging from 11.0 to 12.0 pCi/L across tested properties, homeowners should prioritize immediate radon testing and strongly consider professional mitigation systems to address these concerning levels.
Based on 2 user-submitted radon tests for homes in Cohasset, MA. The EPA recommends taking action at or above 4.0 pCi/L.
Cohasset, MA Radon Mitigation
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Cohasset, MA Radon Levels
User-submitted radon test readings from homes in the Cohasset area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 12 pCi/L | Cohasset, MA | 0-20 Years | Full Basement |
| 11 pCi/L | Cohasset, MA | 0-20 Years | Full Basement |
Have a radon test result for Cohasset? Submit your reading to help other homeowners.
Radon Readings Near Cohasset, MA
Compare radon levels in Cohasset with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Hingham | 4.1 mi | 7.00 pCi/L | 2 |
| Norwell | 5.5 mi | 20.00 pCi/L | 1 |
| East Weymouth | 5.8 mi | 4.50 pCi/L | 2 |
| North Weymouth | 6.9 mi | 10.00 pCi/L | 2 |
| Weymouth | 7.7 mi | 15.00 pCi/L | 2 |
| Braintree | 9.6 mi | 9.00 pCi/L | 1 |
| Quincy | 10.4 mi | 10.50 pCi/L | 2 |
| Abington | 11.2 mi | 4.00 pCi/L | 1 |
Norfolk County Radon Profile
The soils and bedrock of Norfolk County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 17 cities in Norfolk County average 8.08 pCi/L across 25 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Norfolk County to test, as levels can differ between neighboring homes.